Attachment for typewriters



Se t, 2 1924. I 1,507,278

F. E. FANGER ATTACHMENT FOR TYPEWRITERS Filed Aug. 9, 1922 1 2 Sheets-Sheet l Sept. 2 1924. 1,507,278-

F'. E. FANGER 4 ATTACHMENT FOR TYPEWRITERS Filed Aug. 9, 1922 2 Sheets- Sheet. 2

anon 1 oz Patented Sept, 2, 12d.

F EDWARD FANGFR, 0F MEXICQ, MEXIGUQ ATTACHMENT FOR T'YIPEWRIIERS.

Applicationfiled August 9, 1922. Serial No. 5805M.

To all whom it may concern,

Be it known that FRED EDWARD FANGER, citizen of the United States, residing at Mexico, I). F Republic of Mexico, has invented certain new and useful Improvements in Attachments for Typewriters, of which the following is a specification.

My invention relates to an attachment for typewriters, whereby the user of the machine may know at any time and instantly how many lines may'still be written upon the unused portion of the paper in the machine,

@ne of the objects of the invention relates to an attachment for the indicated purpose embodying an element so mounted as to be revolved, with the revolving of the axle of the platen roller, relatively to a fixed pointer,

' and bearing peripheral symbols indicating single, double or triple line spacing.

Another object of the invention is to improve the form and arrangement of the parts.

entering into the attachment whereby the use of externally toothed gear elements may be employed, and whereby also the setting of the attachment is facilitated and simplified.

A further object of the invention is to facilitate the setting of the attachment whenever paper of only one length is generally used.

A still further object is .to provide a construction in which the attachment can be secured to a Remington machine and at the left of the platen.

/Vith these general objects in view, my invention consists'in certain novel and. peculiar features of construction and combination of parts as hereinafter described and claimed, and in order that it may be fully understood, reference is to be had to the accompanying drawing in which re 1 is a plan view of a typewriter attachment embodying my invention, illustratin the same position on a typewriter;

Figure 2 is a longitudinal vertical section on the line 2-2 or" Figure 1;

Figure 3 is a fragmentary view similar to KNEE?) 2 but illustrating a slight modifica- Figure t is an end elevation with parts in Figure 6 is a section on theline 6-45 of Figure 5;

. Figure 7 is a section on the line 7-7 of Figure 6;

Figure 8 is a perspective view of the supplementary pointer, the dotted lines showing the spring; I

Figure 9 is an elevation of a spring for holding the supplementary pointer in adjusted position.

In the illustration, the letter A indicates a portion of a platen roller, B the axle, C the Knurled head on the axle for turning the same and D a fragment of the typewriter frame.

in accordance with my invention, a toothed pinion 10 is secured on the axle B of the platen roller and meshes with a larger toothed gear 11, turning the latter. Said gear 11 is in rigid relation to a shell 01' casing 12, the hub 13 of which is on a horizon- 'tal stud shaft 1% mounted in any suitable manner on the typewriter frame or on a part in rigid relation therewith. In the illustrated example, the inner end of the shaft 1% is screwed into a depending flange 15 on a plate 16 secured by screws 17 to the frame.

The housing 12 presents a broad periphery on which is produced in any suitable manner, annular series of symbols, indicating. single, double and triple line spacing. A pointer 18 is provided in fixed position on the frame or an element rigid therewith, said. pointer, for example, being rigid with the attaching plate 16. Since the stud shaft 14 carrying the housing 12 is also supported on ,the flange 15 of plate 16, the securing of said plate positions the attachment for use.

A spring 19 is coiled about the stud shaft 14 and abuts at its outer end against the housing 12 tending to maintain the same in such a position on the shaft 1 as to maintain the gear 11 in mesh with the pinion 10. lhe spring 19 may extend at its innor end through an opening 12 at the center of the housing 12 and around the shaft 14 as in Fig. 2, and abut at its inner end a 'ains t the flange 15 or other fixed part .of the typewriter; or a coil spring indicated at 19 of Fig. 3may terminate at its inner end within the housing 12, said inner end being suitably secured to the shaft li as by passing it into a transverse hole provided for the purpose in said shaft, as indicated 14s. Fig, 3, the chmacter l2 indicates a portion of the modified driven gear element corresponding with the element 11 except as to the hole 12 which is of sufficient size only for the shaft 14 to freely pass therethrough. The housing 12, in addition to being loose on the shaft 14, in order that it .may revolve about the same, is axially slidable on said shaft against the tension of. the spring 19 or 19* for setting the attachment, the setting being effected by moving the housing 12 axially to disengage the gear 11 from the pinion 10 so that the I housing and said gear may be turned in plementary pointer 21 to be set for i'ndieating the number of lines which can be written on the paper. For instance, if letter size paper is ordinarily used, then the operator would set the attachment at, say 60, and set the pointer 21 opposite the number in the column of figures on the drum. After once setting, it will only be necessary to turn the drum until the pointer 21 is opposite the pointer 18, when beginning to write on a sheet of paper. This is simpler than having to look each time for the number 60 upon the drum and thus makes the setting operation much easier.

- The construction devised for attaining this end comprises a toothed disc 22, which may be fastened to the drum 12 by screws 23. interposed between the end of the drum and the said disc is a flange 24 secured in reiation thereto and providing a for the circular portion 25 of the o supplementary pointer 21. pointer may he i and is ovided'wi disc 22 ion when set in position, For holding the said teeth of the pointer engagement with the disc 22, leaf spring 27 may be interposed between the end of t e drum and the pointer 21 and comprising resilient arms 28 provided with elbows 29 for increasing resiliency. As shown'by dotted lines in *ig. 8, the spring and pointer may be made in one piece.

e machines, as in the Underwood, ment is located on the right hand the machine but in a Remington ads of springy metal teeth 26 for engaging t l d the left of the platen. A

ructicn for this purpose may comp a date having a split sleeve which cits over ionary part 31 on the n e and rah" =11 can be securely fasilk? screw 32 lit sleeve to- The to hold the said pointer neonate gethen. The shaft 33 on which the d rotates is secured to the plate 30 by a screw thread connection. The'pointer 18 is rigidly secured to the plate 30 by screwing the head of the stud shaft 33 up against it.

Operation.

Knowing the number of lines which can be written on the particular sheet in the machine, the attachment is pushed inwards to disengage the gears and rotated until the pointer 18 is opposite the said number ing it, whereupon the spring will forceit into engagement with he said teeth.

As the platen rotates, the drum will also rotate and the numbers opposite the sta tionary pointer will always indicate the corresponding single, double and triple s aces which remain on the page and ,capab e of being written on.

It will be obvious from the foregoing that the attachment employs the minimum num ber of parts, and all are of simple form; and that the securing of the attachment in position, as well as its adjustment may be quickly and conveniently effected.

I would state in conclusion that, while the illustrated exam les constitute practical embodiments of my invention, 1 do not limit myself strictly to the mechanical details herein illustrated, since manifestly the same can be considerably varied without departure from the spirit of the invention, defined in the appended claims.

Having described my invention claim as new and desire secu'i' 1 Patent is:,

u. hi h USPS i. A typewriter attachment of the class I described including a tootheddrive pinion adapted to be revolved with the revolving of the axle of the platen roller, a toothed driven gear element adapted to mesh with said pinion to be driven thereby, a revoluble indicating element in rigid relation with said gear element, presentin at its periphery annular series of symbo s indicating varied line spacing, a stud shaft on which said gear neonate able axially on the shaft to disengage the driven element and pinion to permit setting of the attachment.

2. A t pewriter attachment of the class describe inclu a stud shaft adapted to be mounted in fixe position on a typewriter adjacent to theaxle of the platen roller, a revoluble indicating element loosel mounted on said shaft presenting series 0 symbols re resenting varied line spacing, a fixed pointer relatively to which said indicating element revolves, a driven gear element rigid with said revoluble indicating element and coaxial therewith, said driven element and indicating element bei movable axially on saidshaft, a drive pinion adapted to be mounted on the axle of the platen roller, and spring means tending to maintain the revolub e indicating element in a position with the driven gear element in mesh with said pinion 3. A t pewriter attachment of the class describe including a stud shaft adapted to be mounted in fixed position on a typewriter adjacent to the axle of the platen roller, a revoluble indicating element loosely mounted on said shaft presenting series of symbols representing varied e spacing, a fixed pointer relatively to which said indicating element revolves, a driven gear element rigi with said revoluble indicating element and coaxial therewith, said driven element and indicating element being movable axially on said shaft, drive means for said driven gear element adapted to be mounted to be turned with the turning of the platen roller, and means tending to maintain the revoluble element in a position with said driven gear element in driving connection with said gear means.

4. A typewriter attachment of the class described, comprising an indicating element, a toothed disc secured thereto,- a pointer rotatable relative to the said disc and pro vided with means for engaging the same to hold the pointer in set position.

-5. A typewriter attachment of the'class described comprising an indicating element, a toothed disk secured thereto, a pointer rotatable relative to the disk and provided with teeth and means for resiliently holding the teeth of the pointer in engagement with the disk.

In testimony whereof I afix my signature.

FRED EDWD RANGER. 

